package com.liuzu.esys.controller;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.read.builder.ExcelReaderBuilder;
import com.alibaba.excel.read.builder.ExcelReaderSheetBuilder;
import com.alibaba.excel.util.FileUtils;
import com.alibaba.excel.write.builder.ExcelWriterBuilder;
import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
import com.liuzu.esys.bo.OutStorageBo;
import com.liuzu.esys.common.LayuiPageVo;
import com.liuzu.esys.common.R;
import com.liuzu.esys.listener.WebOutStorageListener;
import com.liuzu.esys.pojo.OutStorage;
import com.liuzu.esys.service.OutStorageService;
import com.liuzu.esys.vo.IntoStorageVo;
import com.liuzu.esys.vo.OutStorageVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;

/**
 * 太上老君保佑：代码，绿绿绿绿绿！！！！！
 *
 * @Description :
 * @Author : 冯小冯
 * @Date : 2022-07-26 09:04
 */
@RestController
@RequestMapping("/outStorage")
public class OutStorageController {
    @Autowired
    private OutStorageService outStorageService;
    @RequestMapping("/outStorageList")
    public LayuiPageVo<OutStorage> outStorageList(@RequestParam Map<String,Object> params){
        return outStorageService.outStorageService(params);
    }

    //添加库存信息
    @RequestMapping("/outstorageadd")
    public R storageAdd(OutStorage outStorage){
        int i = outStorageService.outStorageAdd(outStorage);
        if(i==1){
            return R.ok();
        }
        return R.error();
    }

    //修改库存信息
    @RequestMapping("/storageupdate")
    public R storageUpdate(OutStorage outStorage){
        int i = outStorageService.outStorageUpdate(outStorage);
        if(i==1){
            return R.ok();
        }
        return R.error();
    }

    //删除库存信息
    @RequestMapping("/storagedelete")
    public R storageDelete(int id){
        int i = outStorageService.outStorageDelete(id);
        if(i==1){
            return R.ok();
        }
        return R.error();
    }

    @Autowired
    WebOutStorageListener webOutStorageListener;

    //下载模板
    //下载excel 模板
    @RequestMapping("/templateDownload")
    public void templateDownload(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //下载excel 的 响应头
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        //读取服务器上的模板文件 写到浏览器
        //得到模板文件的路径
        String realPath = request.getServletContext().getRealPath("/template/出库记录表.xlsx");

        //根据文件路径 创建File 对象
        File file = new File(realPath);

        // 把File  对象转为 字节数组
        byte[] bytes = FileUtils.readFileToByteArray(file);
        // 下载的文件名 是中文  要进行转码  要不然会出现乱码
        String filename = URLEncoder.encode("出库记录表", "utf-8");

        // 告诉浏览器  下载文件
        response.setHeader("Content-Disposition","attachment;filename="+filename+".xlsx");

        //得到指向浏览器的输出流  向浏览器写输出
        ServletOutputStream outputStream = response.getOutputStream();
        // 把字节数组 输出到浏览器
        outputStream.write(bytes);

        outputStream.close();
    }


    @RequestMapping("/import")
    public R importExcel(MultipartFile file) throws IOException {
        // 避免遇见请求报错
        if(file!=null){
            /**
             * 参数1  文件流
             * 参数2  读取到的数据封装到哪个数据类型中
             * 参数3  监听器  每读取一行数据 就会调用监听器中的 invoke  方法
             * */
            ExcelReaderBuilder read = EasyExcel.read(file.getInputStream(), OutStorageBo.class, webOutStorageListener);
            // 得到 sheet 对象
            ExcelReaderSheetBuilder sheet = read.sheet();
            // 读取sheet
            sheet.doRead();

        }
        return R.ok();
    }


    //导出列表数据     把满足条件的数据 查询出来  写到excel 中  ，把excel 写到浏览器
    @RequestMapping("/export")
    public void export(OutStorage outStorage,HttpServletResponse response) throws IOException {
        //下载excel 的 响应数据格式
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        // 下载的文件名 是中文  要进行转码  要不然会出现乱码
        String filename = URLEncoder.encode("出库信息表", "utf-8");

        // 告诉浏览器  下载文件
        response.setHeader("Content-Disposition","attachment;filename="+filename+".xlsx");

        //得到指向浏览器的输出流  向浏览器写输出
        ServletOutputStream outputStream = response.getOutputStream();

        ExcelWriterBuilder write = EasyExcel.write(outputStream, OutStorageBo.class);

        ExcelWriterSheetBuilder sheet = write.sheet();
        //准备满足条件的集合数据
        List<OutStorageBo> outStorageExcelData =   outStorageService.outStorageExcelData(outStorage);
        // 把这个集合数据 写到 输出流
        sheet.doWrite(outStorageExcelData);
    }



    //批量删除
    @RequestMapping("/deleteStoragesByIds")
    public R deleteStoragesByIds(String ids){
        int result = outStorageService.deleteStoragesByIds(ids);
        if (result>0){
            return R.ok();

        }else {
            return R.error();
        }
    }


    //饼状图
    @RequestMapping("/echartsPie")
    public R echartsPie(){
        List<OutStorageVo> list = outStorageService.datePieData();

        return R.ok().data("datesPie",list);
    }




}
